A county IT team moves IPTV-style briefing channels to Source-Specific Multicast so receivers join explicit (S,G) channels. What must be true for that model to work at the edge?
Select an answer to reveal the explanation.
Short Explanation
SSM is Netflix for multicast: you pick the show and the studio uplink. Receivers must speak a version of IGMP that can name sources, and ops must know those source IPs up front. No RP scavenger hunt—just straight (S,G) joins.
Full Explanation
Source-Specific Multicast delivers traffic on (S,G) channels without shared-tree RP dependency for those groups (commonly in 232/8 for IPv4). Hosts signal source-specific interest with IGMPv3 INCLUDE reports (or MLDv2). Operators therefore need accurate source addressing and edge support for that signaling; classic (*,G)-only IGMP and RP-centric shared trees alone are insufficient for pure SSM.